双向链表制作的通讯录源程序， 有交互性 有完整注释 有一定难度-Doubly linked list making contacts source, interactive complete notes there is a certain degree of difficulty

这是一个基于Ｃ＋＋语言设计的数据结构而做的通讯录的课程设计，里面包含了链表的增删改查的操作。(This is a data structure based on C + + language design for the course design of the address book, which contains the chain table, delete, delete and change the operation.)